DIFF Subgroup
B24B 15/02 in valve housings
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Machines or devices designed for grinding seat surfaces; Accessories therefor > in valve housings
CPC:
Machines or devices designed for grinding seat surfaces; Accessories therefor (for spherical surfaces in general B24B11/00) > in valve housings
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1985.
Child Classifications
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